Pump and probe damage testing for investigation of transient material modifications associated with laser damage in optical materials Metadata

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Title

  • Main Title Pump and probe damage testing for investigation of transient material modifications associated with laser damage in optical materials

Creator

  • Author: Negres, R A
    Creator Type: Personal
  • Author: Feit, M D
    Creator Type: Personal
  • Author: DeMange, P
    Creator Type: Personal
  • Author: Bude, J D
    Creator Type: Personal
  • Author: Demos, S G
    Creator Type: Personal

Contributor

  • Sponsor: United States. Department of Energy.
    Contributor Type: Organization

Publisher

  • Name: Lawrence Livermore National Laboratory
    Place of Publication: Livermore, California
    Additional Info: Lawrence Livermore National Laboratory (LLNL), Livermore, CA

Date

  • Creation: 2007-10-18

Language

  • English

Description

  • Content Description: Laser-induced breakdown in the bulk of transparent dielectric materials is associated with the generation of extreme localized conditions of temperatures and pressures. In this work, we perform pump and probe damage testing experiments to investigate the evolution of transient absorption by the host material arising from modifications following confined laser energy deposition in fused silica and DKDP materials. Specifically, we measure the size of the damage sites observed in the region of spatial overlap between the pump and probe pulses versus probe time delay and energy. Results of this proof-of-principle experimental work confirm that material modifications under extreme conditions created during a damage event include transient optical absorption. In addition, we found that the relaxation times of the induced absorption are very distinct for DKDP and SiO{sub 2} even under identical excitation conditions, on the order of 100 ns and 100 {micro}s, respectively.
  • Physical Description: PDF-file: 7 pages; size: 1 Mbytes

Subject

  • Keyword: Modifications
  • Keyword: Breakdown
  • Keyword: Testing
  • Keyword: Dielectric Materials
  • Keyword: Excitation
  • Keyword: Absorption
  • STI Subject Categories: 36 Materials Science
  • STI Subject Categories: 42 Engineering
  • Keyword: Transients
  • Keyword: Lasers
  • Keyword: Silica
  • Keyword: Relaxation Time
  • Keyword: Probes
  • Keyword: Time Delay

Source

  • Conference: Presented at: Boulder Damage Symposium XXXIX, Boulder, CO, United States, Sep 24 - Sep 26, 2007

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Article

Format

  • Text

Identifier

  • Report No.: UCRL-PROC-235690
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 922322
  • Archival Resource Key: ark:/67531/metadc901093
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